This simulation program is made for 2nd grade students in middle school.
This shows what happens to the electric current when we change
the voltage and the resistance.
You can change the value of voltage and resistance using the scrollbar.
If you want to let electric current flow, you click the switch.
The value of electric current is expressed in two ways.
One is by digital, the other is analog (needle).
Model experiment
Vary the values of voltage and resistance as you require.
Click the switch and you can see the value of electric current.
Observe what happens when you increase the value of resistance.
You can repeat this test four or five times.
Decrease the value of resistance. What happens when you do this?
Think! Is there any relationship between resistance
and electric current. (proportion or inverse proportion?)
Record what happens when you increase the value of voltage. Repeat
this test four or five times.
Think! Does the voltage have any relationship with the electric current?
How can we express the relationship between current, voltage and resistance mathematically i.e. using an equation when we examine the results of these experiments.